Sound deadener



o. QTERRELL i 2,424,004

SOUND DEADENEH Fil ed Sept. a, 1943 Inventor Olz'vef Clark YZErr Z Patented July 15, 1947 Oliver Clark Terrell, Portland, ores; Gladys M.

Kern; admlni'stratrix of said Olive! 0. Terrell,

deceased Application September 9, 1943, erial l lo. 5011i 3 Claims.

The present invention relates to new and useful improvements in sound deadening devices for use particularly in shipyards, metal works, et cetera, and has for its primary object to provide, in a manner as hereinafter set forth, novel means for preventing the work from vibrating, thereby materially reducing the noise which has been found highly objectionable and injurious-tothe hearing of workmen andothers in the vicinity.

Another very important object of the invention is to provide a sound deadening device of the aforementioned character which is adapted to be expeditiously applied to the work and removed therefrom.

Other objects of the invention are to provide a sound deadening device of the character described which will be comparatively simple in construction, strong, durable, highly efficient and reliable in use, and which may be manufactured at low cost.

All of the foregoing, and still further objects and advantages of the invention will become apparent from a study of the following specification, taken in connection with the accompanying drawing wherein lik characters of reference designate corresponding parts throughout the several views, and wherein:

Figure 1 is a perspective view, showing a sound deadening device constructed in accordance with the present invention in use.

Figure 2 is a cross-sectional View through a modification.

Referring now to the drawin in detail, and to Figure 1 thereof in particular, it will be observed that reference character I designates a metallic bar of suitable shape and dimensions. The bar I has formed therein, at longitudinally spaced points, vertical threaded openings 2. In its end portions the bar I has formed in its top surface transverse grooves or notches 3.

The grooves or notches 3 are for the reception of the bight portions of a pair of substantially U-shaped metallic yokes 4. The yokes 4 are welded at their ends to the work 5, as at 6.

The openings 2 are for the reception of one or more screws 1. It will be noted that a single screw is shown in Figure 1 of the drawing. The screw 1 is engageable in a socket or depression which is provided therefor in the top of a substantially plane-convex metallic pressure plate 8. A pad 9 of suitable soft or resilient material is interposed between the plate 8 and the work 5.

t is thought that the manner in which the device as thus far described is used will be readily apparent from a consideration of the foregoing.

2 Briefly, the yokes 4 are welded to the work 5 and the end portions of the bar l are engaged in saidyoke's; If desi'red, aserles oi the grooves or notches 3 may be provided in the end portions ofthe'bar l 5 The Screw l is then threadeddownwardly through the chosen opening Zand; the pressure plate 8 is positioned therebeneath on thefpad-Qn The screw 1 is engaged with'the plate 8 rpr forcing said plate towardthe work, thereby compressing the pad Qth'ere'betWeen. A suitable wrench [0 may be applied to the head of the screw 1 for tightening the device on the work. In this manner the work is prevented from vibrating, thus materially reducing the noise. The

device may be expeditiously removed by loosening the screw 1, disengaging the bar I from the yokes 4 and then knocking said yokes off the work 5. Any desired number of the elements 1, 8 and 9 may be used with the bar I.

In the embodiment shown in Figure 2 of the drawing, the screw 1 is eliminated and, if desired, the openings 2 in the bar I may also be omitted. In lieu of the screw 1 and the openings 2, a wedge II is driven transversely between the bar I and the pressure plate 8 for preventing the work from vibrating. In other respects this form of the invention is substantially similar in construction and operation to the embodiment shown in Figure 1 of the drawing.

It is believed that the many advantages of a sound deadener constructed in accordance with the present invention will be readily understood, and although preferred embodiments of the device are as illustrated and described, it is to be understood that further modifications and changes in the details of construction may be resorted to which will fall within the scope of the invention as claimed.

What is claimed is:

1. The combination with a sheet metal structural member, of a means temporarily applied to said structural member to deaden sound by minimizing vibration of said member while the latter is subjected to vibration-causing operations in the assembly of the same to other structural members, said means including a resilient pa applied to the structural member, a substantially plano convex pressure plate mounted on the pad substantially U-shaped yokes attached to the same face of the structural member at spaced points, a bar having its ends engaged in the yokes, and means co-operable with the bar and engageable with the pressure plate for forcing the latter toward the structural member for compressing the pad between the latter and the pressure plate.

2. The combination with a sheet metal structural member, of a means temporarily applied to said structural member to deaden sound by minimizing vibration of said member while the latter is subjected to vibration-causing operations in the assembly of the same to other structural members, said means including a resilient pad applied to the structural member, a substantially plano convex pressure plate mounted on the pad, substantially U-shaped yokes attached to the same face of the structural member at spaced points, a, bar having its ends engaged in the yokes, and means co-operable with the bar and engageable with the pressure plate for forcing the latter towar the structural member for compressing the Dad between the latter and the pressure plate, said bar having grooves in its end portions for the reception of said yokes, said bar further having threaded vertical opening therein, said lastnamed means including a screw selectively insertible in the openings.

3. The combination with a sheet metal structural member, of a means temporarily applied to said structural member to deaden sound by minimizing vibration of sai member while the latter is subjected to vibration-causing operations in the assembly of the same to other structural members, said means including a resilient pad applied to the structural member, a substantially plano convex pressure plate mounted on the pad, substantially U-shaped yokes attached to the same face of the structural member at spaced points, a bar having its ends engaged in the yokes, and means cooperable with the bar and engageable with the pressure plate for forcing the latter toward the structural member for compressing the pad between the latter and the pressure plate, said lastnamed means embodying a wedge insertible between the bar and the pressure plate.

OLIVER CLARK TERRELL.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS 

